Exhaust-nozzle



(No Model.)

L. P. GARNER.

EXHAUST NOZZLE.

N0. 426,260. Patented Apr. 22. 1890.

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' A 770/?NEYS UNITED STATES PATENT OFFICE.

LEXVIS P. GARNER, OF ASHLAND, PENNSYLVANIA.

EXHAUST-NOZZLE.

SPECIFICATION forming part of Letters Patent No. 426,260, dated April 22, 1890.

Application filed February 7, 1890.

To all whom it may concern:

Be it known that I, LEWIS P. GARNER, of Ashland, in the county of Schuylkill and State of Pennsylvania, have invented a new and Improved. Exhaust-Nozzle for Engines, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved exhaust-nozzle for engines, specially locomotive-engines, which is simple and durable in construction and serves to govern the exhaust by increasing or diminishing the outlet.

The invention consists in certain parts and details and combinations of the same, as will be described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a sectional side elevation of the improvement on the line a; :0 of Fig. 3. Fig. 2 is a transverse section of the same on the line y y of Fig 3. Fig. 3 is a sectional plan view of the same on the line a z of Fig. 1, with the plug removed,

The improved exhaustuiozzle A is provided with an outer cylindrical shell B, adapted to be connected at its lower end with the exhaust-pipe of the engine. The upper part of the shell B is formed with the inwardly-extending part 0, from which extends the contracted part D, leading to the outside. In the shell B is held by a rib E a cylinder F, considerably less in diameter than the exterior shell B, so to form a space between the two-walls of the shell B and the cylinder F for the escape of the steam. In this cylinder F is held to slide a plug G, provided with a conical head I'I, extending above the cylinder F, and when at rest it is in line with the eonical part 0 of the outer shell B, \V hen the plug Gis moved outward, the head II is adapted to diminish the space between the conical part 0 and the sides of the head, and when the plug is in its uppermost position it closes with its base the contracted part B.

From the lower end of the plug G extends a pin or shank I, fitting into a correspondingly shaped recess E, formed in the rib E.

erial No. 339,546. (No model.)

A slot 1 is formed in this pin 1, and is engaged at the inner end by the lever J, extending through the opening E in the rib E to the outside, and fulcrumed at the outside to suitable bearings on the exterior shell B. The extreme outer end of the lever J is pivotally connected with a rod K, under the control of the engineer,

The operation is as follows: \Vhen the plug G is in the position shown in Figs. 1 and 2, the exhaust is free to pass up througlrthe shell B in the space formed by the shell,'the cylinder F, and head H of the plug G. Vhen it is desired to throttle the exhaust, the operator presses 011 the rod K, so as to actuate the lever J, which at its inner end swings upward and lifts the plug G, so that the space between the head ll of the said plug and the conical part 0 of the exterior shell B is diminished, and consequently the steam is not permitted to escape freely.

When it is desired to brake the engine, for instance, the plug G is moved upward until the base of its head I'I completely closes the contracted top T, so that the exhaust cannot escape, and consequently produces considerable back-pressure on the piston in the cylinder of the steam-engine on which the nozzle is used. Thus by this very simple means the exhaust steam of the engine is readily governed.

The rib E is preferably tapering at the lower end, so as not to obstruct the upward passage of the steam.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an exhaust nozzle for engines, the combination, with the shell B, having the inwardly extending portion 0 and the contracted portion D, and the cylinder F within the shell. B, and concentric therewith, of the plug G, provided with the conical head H, and having the portion below the head fitting in the cylinder F, and a lever fulcrumed on the shell and engaging the plug, substantially as and for the purpose set forth.

2. In an exhaust-nozzle for engines, the combination, with the shell B, having the inwardlyextending portion 0 and the contracted portion D, and provided with the rib E, having the recess E and opening E and slot of the shank, substantially as shown and the cylinder F, supported by the rib and condescribed. centric With the said shell, of the plug G, fittin gin the cylinderand providedwith the coni- GARNER 5 cal head H, and with the shank I, having the Witnesses: slot 1 and fitting in the recess E, and the le- WILLIAM S. RUSSELL,

Ver J, pivoted to the shell and engaging the COSMUS S. W. SCHOMO. 

